scholarly journals Molecular detection of Mycoplasma gallisepticum in different poultry breeds of Abbottabad and Rawalpindi, Pakistan

2023 ◽  
Vol 83 ◽  
Author(s):  
J. Muhammad ◽  
M. Rabbani ◽  
A. A. Sheikh ◽  
A. A. Rabaan ◽  
A. Khan ◽  
...  
Keyword(s):  
Molecular Detection ◽  
Gene Sequencing ◽  
Mycoplasma Gallisepticum ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Serum Samples ◽  
Cross Sectional ◽  
Demand And Supply ◽  
Livestock Sector ◽  
Percent Similarity

Abstract The poultry sector in Pakistan is contributing mainly in bridging gap between demand and supply for protein. Mycoplasma gallisepticum is an emerging bacterium causing serious problems in poultry industry of Pakistan. A cross-sectional study was conducted to evaluate the M. gallisepticum load in poultry populated regions of Pakistan. Total 600 serum and 600 swab samples were collected, 200 from each broiler, layers and breeders poultry in Rawalpindi and Abbottabad districts. Serum samples were analyzed through ELISA for seroprevalence. Swabs were cultured on Frey’s medium followed by PCR and partial mgc2 gene sequencing. Results of seroprevalence of M. gallisepticum showed that layers (75%, n=150) are more positive as compared to breeders (70%, n=140) and broilers (50%, n=100). Typical colonies of the M. gallisepticum were observed in breeder (26.5%), followed by layer (21%) and broilers (9%). A total of 37.1% (n=42) samples were identified positive through PCR out of total 113 cultured based positive samples. A total of six M. gallisepticum isolates of current study showed 98-99 percent similarity with previously reported isolates on the basis of mgc2 gene partial sequencing. The M. gallisepticum was found highly prevalent in different poultry breads. Results of this study would add into basic data and provide a direction for livestock sector to strengthen a control strategy for mycoplasmosis in poultry farms.

scholarly journals Serum Concentrations of Selected Organochlorines in Pregnant Women and Associations with Pregnancy Outcomes. A Cross-Sectional Study from Two Rural Settings in Cambodia

2020 ◽  
Vol 17 (20) ◽  
pp. 7652
Author(s):  
Margit Steinholt ◽  
Shanshan Xu ◽  
Sam Ol Ha ◽  
Duong Trong Phi ◽  
Maria Lisa Odland ◽  
...  
Keyword(s):  
Polychlorinated Biphenyls ◽  
Pregnant Women ◽  
Gestational Age ◽  
Low Income ◽  
Cross Sectional Study ◽  
Maternal Serum ◽  
Sectional Study ◽  
Serum Samples ◽  
Cross Sectional ◽  
Rural Settings

We conducted a cross-sectional study among 194 pregnant women from two low-income settings in Cambodia. The inclusion period lasted from October 2015 through December 2017. Maternal serum samples were analyzed for persistent organic pollutants (POPs). The aim was to study potential effects on birth outcomes. We found low levels of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCP), except for heptachlors, β-hexachlorocyclohexane (HCH), heptachlor epoxide, and p,p’-DDE. There were few differences between the two study locations. However, the women from the poorest areas had significantly higher concentrations of p,p’-DDE (p < 0.001) and hexachlorobenzene (HCB) (p = 0.002). The maternal factors associated with exposure were parity, age, residential area, and educational level. Despite low maternal levels of polychlorinated biphenyls, we found significant negative associations between the PCB congeners 99 (95% CI: −2.51 to −0.07), 138 (95% CI: −1.28 to −0.32), and 153 (95% CI: −1.06 to −0.05) and gestational age. Further, there were significant negative associations between gestational age, birth length, and maternal levels of o,p’-DDE. Moreover, o,p’-DDD had positive associations with birth weight, and both p,p’-DDD and o,p’-DDE were positively associated with the baby’s ponderal index. The poorest population had higher exposure and less favorable outcomes.

scholarly journals A cross sectional study of leptospirosis and fetal death in Yucatan, Mexico

2016 ◽  
pp. 11-14 ◽  
Author(s):  
María Fidelia Cárdenas Marrufo ◽  
Ignacio Vado Solis ◽  
Gaspar Fernando Peniche Lara ◽  
Carlos Perez Osorio ◽  
José Correa Segura
Keyword(s):  
Spontaneous Abortion ◽  
Low Income ◽  
Fetal Death ◽  
Indirect Elisa ◽  
First Trimester ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Serum Samples ◽  
Recent Infection ◽  
Cross Sectional

Introduction: Leptospirosis is a zoonotic disease affecting mainly to low income human population. Acute leptospiral infection during pregnancy has been associated with spontaneous abortion and fetal death during the first trimester and the abortion may occur as consequence of systemic failure. Objective: To estimate the frequency of Leptospira interrogans infection in women with spontaneous abortion in the state of Yucatan, Mexico. Methods: A cross sectional study on women with spontaneous abortion was conducted. Serum samples were tested for Leptospirosis by the microaglutination test, to estimate the frequency of the infecting serovar. The indirect ELISA IgM was used to detect recent infection by L. interrogans. DNA was extracted from paraffin-embedded tissue of placenta for PCR detection of L. interrogans. Results: Overall frequency of infection with L. interrogans in the 81 women with abortion was 13.6%. Five of the 12 serovars evaluated were found and included. Two of the 11 women with abortion and positive to microaglutination test were also positive to the ELISA IgM test. None samples were positive for PCR Leptospira diagnosis. Conclusion: two women could be associated with spontaneous abortion due to leptospirosis, because they showed antibodies against L. interrogans in the microaglutination test and ELISA IgM assays. Differences between regions were found with respect to the prevalences of lesptospirosis.

Immunological and molecular detection of rotavirus genotype in calves with gastroenteritis in Diyala-Iraq

2021 ◽  
Vol 1 (1) ◽  
pp. 001-013
Author(s):  
Ammar Talib Nasser ◽  
Abdulrazak Shafiq Hasan ◽  
Amer Khazaal Saleh ◽  
Mohammad Kassem Saleh
Keyword(s):  
Molecular Detection ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Rt Pcr ◽  
Cross Sectional ◽  
Reverse Transcription Pcr ◽  
Group A ◽  
Stool Antigen ◽  
Stool Samples ◽  
Age Range

Aim: To explore the prevalence of rotavirus infection along with the molecular detection and genotyping of group A rotavirus (RVA) among bovine calves up to 5 months old in Diyala province-Iraq. Methods: This is a cross sectional study conducted in Diyala province-Iraq during the period of 2019-2020. One hundred bovine calves with age range of 1-5 months were included in the study. All were suffering acute gastroenteritis. Serum anti-rotavirus IgM and IgG plus fecal rotavirus Ag were tested for using ELISA techniques. Stool samples positive for rotavirus Ag were submitted for reverse transcription PCR (RT-PCR) for G and P genes, followed by sequencing and genotyping thereafter. Statistical analysis was done using SPSS version 25 and P values ≤ 0.05 were considered significant. Results: The positivity rate of anti-rotavirus IgM was 80% (P = 0.0001), and that of anti-rotavirus IgG was 79% (P = 0.0001). The rotavirus stool antigen was detected in 68% of calves (P = 0.01). A total of 45 stool samples which were positive for rotavirus Ag were submitted for RT-PCR; 13 (28.9%) were positive and 32 (71.1%) were negative (P = 0.084). 10 PCR positive samples were used for sequencing and genotyping and indicated that all investigated strains belonged to G1P[8] genotype. Conclusion: The current strains analyzed belonged to the G1P[8] RVA genotypes, affirming that employment of VP7 gene polymorphism accurately yielded uniform phylogenetic distances amongst investigated rotavirus strains and that there were no noticeable assortment events between human and animal rotavirus strains in Diyala province.

scholarly journals Molecular detection of Merkel cell polyomavirus in basal cell carcinoma and perilesional tissue: a cross-sectional study

2020 ◽  
Vol 95 (4) ◽  
pp. 527-528
Author(s):  
Marianna Tavares Venceslau Gonçalves ◽  
Rafael Brandão Varella ◽  
Núbia Karla de Oliveira Almeida ◽  
Maria Angelica Arpon Marandino Guimarães ◽  
Flávio Barbosa Luz
Keyword(s):  
Basal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Basal Cell ◽  
Molecular Detection ◽  
Cross Sectional Study ◽  
Merkel Cell Polyomavirus ◽  
Merkel Cell ◽  
Sectional Study ◽  
Cross Sectional

scholarly journals Molecular detection of equine trypanosomiasis in the Riyadh Province of Saudi Arabia

2018 ◽  
Vol 30 (6) ◽  
pp. 942-945 ◽  
Author(s):  
Abdullah D. Alanazi ◽  
Robert Puschendorf ◽  
Bashir Salim ◽  
Mohamed S. Alyousif ◽  
Ibrahim O. Alanazi ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Internal Transcribed Spacer ◽  
Molecular Detection ◽  
Cross Sectional Study ◽  
Trypanosoma Evansi ◽  
Type B ◽  
Sectional Study ◽  
Internal Transcribed Spacer Region ◽  
Cross Sectional ◽  
Species Specific

We conducted a cross-sectional study to detect trypanosome infections of horses and donkeys in the Riyadh Province of Saudi Arabia. DNA was extracted from blood samples collected from 368 horses and 142 donkeys, and subjected to universal first ribosomal internal transcribed spacer region (ITS1)-PCR followed by Trypanosoma evansi species–specific RoTat1.2-PCR. The universal ITS1-PCR revealed T. evansi infection in horses ( n = 12; 3.3%) and donkeys ( n = 4; 2.8%). There was no significant effect of sex or age on the prevalence of trypanosomiasis in horses or donkeys. Application of the RoTat1.2-PCR revealed that the RoTat1.2 VSG gene was absent from the positive ITS1-PCR samples of 3 horses and 1 donkey. This discrepancy could be explained by the circulation of T. evansi type B in Saudi Arabia; however, this suspicion requires confirmation.

scholarly journals Evaluation of nine serological rapid tests for the detection of SARS-CoV-2

2020 ◽  
Vol 44 ◽  
pp. 1
Author(s):  
Marcela Mercado ◽  
Jeadran Malagón-Rojas ◽  
Gabriela Delgado ◽  
Vivian Vanesa Rubio ◽  
Lida Muñoz Galindo ◽  
...  
Keyword(s):  
Study Groups ◽  
Cross Sectional Study ◽  
Igg Antibodies ◽  
Sectional Study ◽  
Rt Pcr ◽  
Serum Samples ◽  
Serological Tests ◽  
Cross Sectional ◽  
Diagnostic Aid ◽  
Rapid Tests

Objective. To evaluate the operative capacity of nine serological rapid tests to detect the IgM/IgG antibodies response in serum from patients with SARS-CoV-2 in different clinical stages. Methods. A cross-sectional study of serological rapid tests was designed to compare the performance of the evaluated immunochromatographic tests for the diagnosis of SARS-CoV-2. A total of 293 samples was used, including negatives, asymptomatic, and symptomatic serum samples. Results. The sensitivity of the evaluated tests was low and moderate in the groups of asymptomatic serum samples and the group of serums coming from patients with less than 11 days since the onset of the symptoms. The specificity for the anti-SARS-CoV-2 antibodies tests ranged between 86.5%-99% for IgM and 86.5%-99.5% for IgG. The sensitivity and the likelihood ratio were different according to the study groups. The usefulness of these tests is restricted to symptomatic patients and their sensitivity is greater than 85% after 11 days from the appearance of symptoms. Conclusions. Serological tests are not an adequate strategy for the identification of asymptomatic and pre-symptomatic patients. Serological rapid tests for the detection of specific anti-SARS-CoV-2 antibodies can be used as a diagnostic aid, but diagnosis must be confirmed by RT-PCR. Rapid tests should be reserved for patients with symptoms lasting more than 11 days.

scholarly journals HBV and HCV serological markers in patients with the hepatosplenic form of mansonic schistosomiasis

2011 ◽  
Vol 48 (2) ◽  
pp. 124-130 ◽  
Author(s):  
Jéfferson Luis de Almeida Silva ◽  
Veridiana Sales Barbosa de Souza ◽  
Tatiana Aguiar Santos Vilella ◽  
Ana Lúcia C. Domingues ◽  
Maria Rosângela Cunha Duarte Coêlho
Keyword(s):  
Risk Factors ◽  
Univariate Analysis ◽  
Cross Sectional Study ◽  
University Hospital ◽  
Northeastern Brazil ◽  
Serological Markers ◽  
Sectional Study ◽  
Serum Samples ◽  
Cross Sectional ◽  
Factors Associated

CONTEXT: Blood transfusion is one of the major risk factors for the transmission of the hepatitis B (HBV) and C (HCV) viruses. However, there are no reports describing the endoscopic transmission of these viruses in patients with the hepatosplenic form of schistosomiasis. OBJECTIVE: To estimate the prevalence of serological markers of HBV and HCV in patients with the hepatosplenic form of schistosomiasis and evaluate the possible risk factors associated with these infections. METHODS: A cross-sectional study was conducted on 230 patients with hepatosplenic form of schistosomiasis who attended a university hospital in Recife, Northeastern Brazil, from February to August 2008. The patients answered a standardized questionnaire about risk factors. Serum samples were analyzed for anti-HBc total, anti-HBs, HBsAg, and anti-HCV using enzyme-linked immunosorbent assays. Univariate analysis and multiple logistic regression were performed. RESULTS: The prevalence was 30% for anti-HBc total and/or HBsAg and 7.4% for anti-HCV. There was a higher frequency of the serological markers in females and in patients aged .50 years. A significant association was detected between the presence of anti-HCV and the receipt of six or more blood transfusions. There was no association of history and number of digestive endoscopies with the serological markers analyzed. CONCLUSIONS: We observed a higher prevalence of serological markers for HBV and a lower prevalence of anti-HCV. Our results indicate that females and patients of an advanced age are the most affected categories and that patients that received multiple transfusions are at a higher probability of HCV infection.

scholarly journals Serological Evidence of Brucellosis in Goats in Kaduna North Senatorial District of Kaduna State, Nigeria

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
B. Y. Kaltungo ◽  
S. N. A. Saidu ◽  
A. K. B. Sackey ◽  
H. M. Kazeem
Keyword(s):  
Cross Sectional Study ◽  
Agglutination Test ◽  
Current Status ◽  
Sectional Study ◽  
Serological Evidence ◽  
Serum Samples ◽  
Cross Sectional ◽  
One Year ◽  
Serum Agglutination ◽  
Ethylene Diaminetetraacetic Acid

A cross-sectional study was carried out to determine the current status of Brucella antibodies in goats in Kaduna North Senatorial District of Kaduna State, Nigeria. A total of 442 serum samples (31 bucks and 411 does) were screened using Rose Bengal plate test (RBPT), serum agglutination test with ethylene diaminetetraacetic acid (SAT-EDTA), and lateral flow assay (LFA). Results. The prevalence of Brucella antibodies was found to be 25.8%, 11.1%, and 2.5% using RBPT, SAT-EDTA, and LFA, respectively. The prevalence in bucks was 32.3%, 3.2%, and 0.0% and 17.5%, 12.4%, and 3.9% in does using RBPT, SAT-EDTA, and LFA, respectively. The prevalence rates for goats less than one year of age using the tests were 1.5%, 0.0%, and 0.0%. While for those within the age bracket of one to three years, the rates were 19.4%, 10.5%, and 3.5%, respectively. The corresponding values for goats above 3 years of age were 34.2%, 15.2%, and 1.8%, respectively. The prevalence of brucellosis in goats in the study area is high which poses a threat to the development of the livestock industry and is of important zoonotic implications in Nigeria.

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